jsPsych/plugins/jspsych-survey-text.js
2016-08-12 12:26:04 -04:00

135 lines
3.5 KiB
JavaScript

/**
* jspsych-survey-text
* a jspsych plugin for free response survey questions
*
* Josh de Leeuw
*
* documentation: docs.jspsych.org
*
*/
jsPsych.plugins['survey-text'] = (function() {
var plugin = {};
plugin.info = {
name: 'survey-text',
description: '',
parameters: {
questions: {
type: [jsPsych.plugins.parameterType.STRING],
array: true,
default: undefined,
no_function: false,
description: ''
},
premable: {
type: [jsPsych.plugins.parameterType.STRING],
default: '',
no_function: false,
description: ''
},
rows: {
type: [jsPsych.plugins.parameterType.INT],
array: true,
default: 1,
no_function: false,
description: ''
},
columns: {
type: [jsPsych.plugins.parameterType.INT],
array: true,
default: 40,
no_function: false,
description: ''
}
}
}
plugin.trial = function(display_element, trial) {
trial.preamble = typeof trial.preamble == 'undefined' ? "" : trial.preamble;
if (typeof trial.rows == 'undefined') {
trial.rows = [];
for (var i = 0; i < trial.questions.length; i++) {
trial.rows.push(1);
}
}
if (typeof trial.columns == 'undefined') {
trial.columns = [];
for (var i = 0; i < trial.questions.length; i++) {
trial.columns.push(40);
}
}
// if any trial variables are functions
// this evaluates the function and replaces
// it with the output of the function
trial = jsPsych.pluginAPI.evaluateFunctionParameters(trial);
// show preamble text
display_element.append($('<div>', {
"id": 'jspsych-survey-text-preamble',
"class": 'jspsych-survey-text-preamble'
}));
$('#jspsych-survey-text-preamble').html(trial.preamble);
// add questions
for (var i = 0; i < trial.questions.length; i++) {
// create div
display_element.append($('<div>', {
"id": 'jspsych-survey-text-' + i,
"class": 'jspsych-survey-text-question',
"css": {
"margin": '2em 0em';
}
}));
// add question text
$("#jspsych-survey-text-" + i).append('<p class="jspsych-survey-text">' + trial.questions[i] + '</p>');
// add text box
$("#jspsych-survey-text-" + i).append('<textarea name="#jspsych-survey-text-response-' + i + '" cols="' + trial.columns[i] + '" rows="' + trial.rows[i] + '"></textarea>');
}
// add submit button
display_element.append($('<button>', {
'id': 'jspsych-survey-text-next',
'class': 'jspsych-btn jspsych-survey-text'
}));
$("#jspsych-survey-text-next").html('Submit Answers');
$("#jspsych-survey-text-next").click(function() {
// measure response time
var endTime = (new Date()).getTime();
var response_time = endTime - startTime;
// create object to hold responses
var question_data = {};
$("div.jspsych-survey-text-question").each(function(index) {
var id = "Q" + index;
var val = $(this).children('textarea').val();
var obje = {};
obje[id] = val;
$.extend(question_data, obje);
});
// save data
var trialdata = {
"rt": response_time,
"responses": JSON.stringify(question_data)
};
display_element.html('');
// next trial
jsPsych.finishTrial(trialdata);
});
var startTime = (new Date()).getTime();
};
return plugin;
})();